19049167872 has 660 divisors, whose sum is σ = 68331889560. Its totient is φ = 5267275776.

The previous prime is 19049167871. The next prime is 19049167883. The reversal of 19049167872 is 27876194091.

19049167872 is a `hidden beast` number, since 1 + 90 + 491 + 67 + 8 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19049167871) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 174762954 + ... + 174763062.

It is an arithmetic number, because the mean of its divisors is an integer number (103533166).

Almost surely, 2^19049167872 is an apocalyptic number.

19049167872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19049167872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34165944780).

19049167872 is an abundant number, since it is smaller than the sum of its proper divisors (49282721688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19049167872 is a wasteful number, since it uses less digits than its factorization.

19049167872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The spelling of 19049167872 in words is "nineteen billion, forty-nine million, one hundred sixty-seven thousand, eight hundred seventy-two".